NILTON CESAR PIRES BIONE1, MARIA SUELY PAGLIARINI2, LEONES ALVES DE ALMEIDA3
BIOCELL, Vol.29, No.2, pp. 177-181, 2005, DOI:10.32604/biocell.2005.29.177
Abstract A spontaneous male-sterile, female-fertile mutation affecting bivalent arrangement at the metaphase plate and cytokinesis was detected in line BR98-197 of the soybean breeding program developed by Embrapa – National Soybean Research Centre. Untill diakinesis, meiosis was normal with chromosome pairing as bivalents. From this phase, in several meiocytes, bivalents were not able to organize a single metaphase plate and remained scattered in the cytoplasm in a few or several groups. In these meiocytes, chromosomes segregated in both divisions giving rise to several micronuclei. However, the main cause of male sterility was the absence of cytokinesis More >
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